# Full-Stack Drupal Developer | Next.js | React | CiviCRM | Drupal Commerce | API Integrations Need a developer who can build modern web applications—not just websites? I help businesses, nonprofits, startups, and enterprise organizations build scalable digital platforms using Drupal, React, Next.js, CiviCRM, and modern API-driven architecture. With 12+ years of experience in Drupal development and extensive experience across modern frontend frameworks, I build solutions that are fast, secure, scalable, and easy to maintain. Whether you're launching a new platform, modernizing an existing Drupal website, integrating business systems, or migrating legacy applications, I can help deliver a reliable solution from planning to deployment. ## My Expertise ✔ Custom Drupal Module Development ✔ Drupal 6, 7, 8, 9, 10 & 11 Development ✔ Drupal Migrations & Upgrades ✔ Headless Drupal Development ✔ React.js Applications ✔ Next.js Development ✔ Tailwind CSS ✔ CiviCRM Development & Custom Extensions ✔ Drupal Commerce ✔ Stripe & Payment Gateway Integration ✔ REST API, JSON:API & GraphQL Integrations ✔ Third-Party API Development ✔ Membership & Association Portals ✔ Learning Management & Certification Platforms ✔ Performance Optimization ✔ Security Hardening ✔ Bug Fixing & Long-Term Maintenance --- ## Technologies **Backend** • Drupal 6–11 • PHP • Symfony • CiviCRM • Drupal Commerce • MySQL • Composer • Drush **Frontend** • React.js • Next.js • JavaScript (ES6+) • TypeScript • Tailwind CSS • HTML5 • CSS3 • Bootstrap **Integrations** • REST APIs • JSON:API • GraphQL • Stripe • PayPal • Mailchimp • Google APIs • Twilio • AWS Services **Development Tools** • Git • Docker • DDEV • Pantheon • Acquia • GitHub • GitLab --- ## What I Build • Enterprise Drupal Platforms • Membership Websites • Association Portals • NGO & Nonprofit Systems • Corporate Websites • Headless Drupal Applications • Customer Portals • Commerce Platforms • CRM-Integrated Websites • Event Registration Systems • Learning Platforms • Business Automation Solutions --- ## Why Clients Hire Me • 12+ years of Drupal expertise • Strong backend architecture and clean, maintainable code • Modern frontend development with React and Next.js • Deep experience integrating Drupal with CiviCRM and external systems • Clear communication, reliable delivery, and long-term support • Ability to understand business requirements and translate them into scalable technical solutions I believe successful projects are built on thoughtful architecture, clean code, and clear communication. My goal is not just to complete tasks, but to build solutions that continue to deliver value as your business grows. If you're looking for a developer who can handle everything from complex Drupal backend development to modern React/Next.js frontends and seamless system integrations, I'd be glad to discuss your project and recommend the best approach.

I build business automation that actually replaces manual work. Not “connect tool A to tool B”, but full operational logic: data flow, decisions, edge-cases, exceptions, approvals, payments, scheduling, inventory, customer journeys, internal processes and the integrations that keep everything consistent. I work across multiple platforms and stack layers, depending on what the business needs: • n8n, Make, Zapier • Custom scripts and backend logic • API integrations between CRM / ERP / POS / inventory / finance tools • Database-driven workflows (Airtable and others) • Web → backend → CRM → billing automations • Payment flows (Stripe etc.) • Internal process automation that reduces hours, removes errors and scales cleanly My job is to understand how the business actually runs, map the rules clearly, and build systems that don’t collapse when real-world constraints hit them. I handle the architecture, logic design, integration layer, automation flows, and all the corner cases that make the difference between “works on paper” and “works in production”. I take fixed-price projects that have real operational impact: • multi-step workflows • cross-system logic • automation tied to revenue, fulfilment or capacity • complex data movement • business processes that need to be reliable, not cute Delivery is simple and structured: Requirements and business rules Technical flows (clear diagrams, edge-cases covered) Implementation Testing under real conditions Documentation Optional ongoing support Strong track record, direct communication, predictable delivery, and systems that keep running when the workload grows.

Client Satisfaction is FIRST! + Stripe Expert + PHP / MySQL + CMS Development ( WordPress ) + Framework ( Laravel, CakePHP, CodeIgnier ) WORKING WITH ME : + Near 24/7 Availability - Always find a convenient time that works best for you. There is absolutely no need for you to adapt your busy life/work schedule to get this project done.

𝗦𝘁𝗿𝗶𝗽𝗲 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗲𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 with over 𝟱 𝘆𝗲𝗮𝗿𝘀 of expertise in 𝘀𝘂𝗯𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻 𝗺𝗼𝗱𝗲𝗹𝘀 𝗮𝗻𝗱 𝗺𝗮𝗿𝗸𝗲𝘁𝗽𝗹𝗮𝗰𝗲(𝗖𝗼𝗻𝗻𝗲𝗰𝘁 𝗔𝗰𝗰𝗼𝘂𝗻𝘁) integrations. Proficient in managing and implementing Stripe Connect solutions, including handling API integrations, subscription plans, recurring payments, payouts, and marketplace functionalities. Passionate about staying current with the latest payment technologies and continuously refining development skills. 𝐀𝐈-𝐏𝐨𝐰𝐞𝐫𝐞𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝟐𝟐+ 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬 𝐰𝐢𝐭𝐡 𝐒𝐮𝐩𝐚𝐛𝐚𝐬𝐞 & 𝗟𝗼𝘃𝗮𝗯𝗹𝗲 𝐓𝐨𝐨𝐥𝐬 𝗦𝘁𝗿𝗶𝗽𝗲 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: - Subscription Plans - Recurring Payments - Stripe Connect (Marketplace) - Marketplace Identity Verification - Invoices - Tax Calculation - Payment API Integration - Payouts, - Freeze Funds - Webhook Integration(Signature) - PCI Compliance - Zapier - Make.com 𝗕𝗮𝗰𝗸-𝗲𝗻𝗱 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀: PHP (Laravel, CodeIgniter, Yii2), Node (Nest, Express),Supabase. 𝗙𝗿𝗼𝗻𝘁-𝗲𝗻𝗱 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀: React.JS,Vue.JS, jQuery, Material UI, Bootstrap, HTML 5, CSS, SASS, WordPress ,Make.com,Zapier, Lovable 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲: PostgreSQL, MySQL, NoSQL, SQL, MongoDB, Firebase. 𝗖𝗹𝗼𝘂𝗱: Azure, AWS, GIT, Docker. 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀: Stripe Payment API, Make.com, Zapier, Supabase, Loveable, HubSpot API, Microsoft and Google Calendar synchronization oAuth, Skype, and Zoom integrations, Klarna API integration, GTM and Google Analysis. I invite you to review my portfolio, and afterwards, we can engage in a brief discussion regarding your project. This conversation will allow us to delve into the details of your project and explore how my skills and expertise can be leveraged to benefit your project or business.

🚀 Scalable Booking Systems, Payment Solutions & API-Driven Workflows for Modern Businesses Hi, I’m Rajneesh — a Top-Rated Full-Stack Developer with 12+ years of experience and a 100% Job Success Score on Upwork. I help rental operators, SaaS founders, and service-based businesses streamline bookings, automate workflows, and integrate powerful APIs using WordPress, WooCommerce, and custom tech stacks. 🔧 What I Deliver: ✅ Custom Booking & Rental Platforms Dynamic booking websites for hotels, rentals, experiences, and services OTA calendar sync (Airbnb, VRBO, Booking.com), real-time availability, multi-vendor setups Guest automation: emails, invoices, upsells, service add-ons, and more ✅ WooCommerce + Stripe Expertise Custom WooCommerce flows with Stripe, PayPal, and Razorpay integrations Secure checkout pages, payment subscriptions, and instant webhooks Multi-currency support, add-on plugins, and mobile-friendly UX ✅ SaaS App Development Member dashboards, subscription systems, tiered access, and analytics REST API integrations (PMS, CRM, payment, communication) Built with scalability and monetization in mind ✅ WordPress as a Scalable Platform Custom plugins and themes tailored to business needs Advanced admin dashboards, booking management, and reporting Lightweight, fast, and secure solutions — no bloated code ✅ API Integrations that Work Stripe, Twilio, SendGrid, Zoho, Pipedrive, Google APIs Real-time syncing between platforms Booking engines, CRMs, and third-party vendor systems 💡 Why Clients Keep Coming Back: I build clean, modular, scalable systems — not just quick fixes I focus on business outcomes, not just code I stay communicative, accountable, and solution-oriented I offer hands-on post-launch support, updates, and iterations Whether you're launching a new rental site, integrating Stripe into your platform, or building a full SaaS app — I’ll help you get it done right. 📩 Let’s talk if you need someone who gets both the tech and the business side. — Rajneesh

For 15+ years I was the person at the bank deciding whether merchants won or lost chargebacks. Now I fight for merchants instead. I've worked both sides (Issuing and Acquiring) across Visa, Mastercard, AMEX and UnionPay. Certified directly by Visa and Mastercard in Dispute Resolution, Arbitration, VROL/MasterCom and end-to-end Chargeback Management. That insider perspective is what separates my work from every other chargeback freelancer on this platform. What I do differently: I don't generate template responses. I build cases the way bank reviewers actually evaluate them: right evidence, right order, mapped to the reason code, structured to win. Full dispute lifecycle coverage: → Chargeback responses and rebuttal letters → Re-presentments, Pre/Arbitration and compliance → Threshold monitoring (Ethoca, Verifi, VAMP, MATCH) → Checkout and policy audits to prevent disputes before they start → Chargeback department setup for growing merchants and enterprises Platforms: Shopify · Stripe · PayPal · NMI · Maverick · Braintree · WooCommerce · Amazon · Authorize.net · Klarna · AMEX · Airwallex ·Slack · Gorgias · Freshdesk, Zoho and more. The numbers: → 155+ jobs · 3,700+ hours · 100% Job Success · Top Rated Plus → Ranked #1 on Google search as "The best chargeback freelancer" → Won disputes from $50 to $21,000+ for individual merchants From startups building dispute workflows to enterprise clients seeking full setup - I've handled it. I also run "Chargeback Specialist" a Shopify app for automated dispute responses. Listed in my portfolio. Dealing with chargebacks you should be winning? Message me. I respond within 4 hours.

I help SaaS companies stabilize, scale, and optimize revenue-critical systems. Over the past 10+ years, I've worked as a senior full-stack engineer and architect, building and maintaining production SaaS platforms used by thousands of customers. My specialty is solving the complex problems that directly impact revenue, subscriptions, payments, and customer experience. Recent projects include: ✓ Stabilized a 10,000+ subscriber SaaS platform built on Next.js, Supabase, and Vercel ✓ Eliminated double-charge and duplicate subscription issues affecting customer billing ✓ Rebuilt Stripe webhook architecture and achieved zero webhook processing errors ✓ Fixed failed payment recovery workflows and subscription lifecycle automation ✓ Implemented Meta Conversion API (CAPI) and improved Purchase Event Match Quality to 9/10 ✓ Configured TikTok Pixel and server-side tracking for improved attribution ✓ Built Stripe Terminal and in-person payment integrations ✓ Developed large-scale Laravel, React, Angular, and Node.js applications I regularly work with: • Stripe API & Stripe Billing • Stripe Webhooks • Laravel & PHP • Node.js & NestJS • React & Next.js • Supabase • PostgreSQL & MySQL • REST APIs • Meta CAPI • TikTok Pixel • GA4 & Server-Side Tracking • SaaS Architecture • Subscription Platforms One of my long-term clients operates a Texas-based on-demand service platform where I've been responsible for architecture, backend systems, APIs, payment processing, POS integrations, and ongoing platform enhancements since 2021. Clients hire me when: * Payments are failing * Webhooks are unreliable * Subscription systems are broken * Tracking data is inaccurate * Production systems require stabilization * Revenue-impacting bugs need permanent fixes I communicate clearly, work independently, and focus on delivering solutions that continue working long after deployment. If your SaaS platform depends on Stripe, subscriptions, recurring billing, or mission-critical backend systems, I can help diagnose the root cause, implement a robust solution, and ensure your platform is ready to scale.

Most startups don't fail because of bad ideas, they fail because development takes too long, costs more than expected, and the product isn't built around real business workflows. 𝑰 𝒉𝒆𝒍𝒑 𝒇𝒐𝒖𝒏𝒅𝒆𝒓𝒔 𝒂𝒏𝒅 𝒈𝒓𝒐𝒘𝒊𝒏𝒈 𝒃𝒖𝒔𝒊𝒏𝒆𝒔𝒔𝒆𝒔 𝒍𝒂𝒖𝒏𝒄𝒉 𝑺𝒂𝒂𝑺 𝒑𝒓𝒐𝒅𝒖𝒄𝒕𝒔, 𝒂𝒖𝒕𝒐𝒎𝒂𝒕𝒆 𝒘𝒐𝒓𝒌𝒇𝒍𝒐𝒘𝒔, 𝒂𝒏𝒅 𝒃𝒖𝒊𝒍𝒅 𝒔𝒄𝒂𝒍𝒂𝒃𝒍𝒆 𝒑𝒍𝒂𝒕𝒇𝒐𝒓𝒎𝒔 𝒕𝒉𝒂𝒕 𝒔𝒂𝒗𝒆 𝒕𝒊𝒎𝒆, 𝒓𝒆𝒅𝒖𝒄𝒆 𝒎𝒂𝒏𝒖𝒂𝒍 𝒘𝒐𝒓𝒌, 𝒂𝒏𝒅 𝒔𝒖𝒑𝒑𝒐𝒓𝒕 𝒈𝒓𝒐𝒘𝒕𝒉. 👋Hello, I’m Muhammad Khan, a 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐖𝐞𝐛 ‎𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 with over 6 years of experience. I’ve successfully ‎completed over 50 projects utilizing 𝐋𝐚𝐫𝐚𝐯𝐞𝐥, 𝐕𝐮𝐞.𝐣𝐬, 𝐌𝐲𝐒𝐐𝐋, 𝐀𝐏𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 𝐚𝐧𝐝 𝐒𝐜𝐚𝐥𝐚𝐛𝐥𝐞 𝐖𝐞𝐛 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬.‎ Whether you're launching an MVP, replacing manual workflows, or scaling an existing platform, my focus is simple: ✔ Build software that solves real business problems ✔ Create systems that are easy to manage and scale ✔ Deliver clean, maintainable code that supports future growth My expertise lies in building scalable, secure web applications ‎tailored to unique business needs. Whether for startups or ‎established businesses, my goal is to enhance user experience ‎and operational efficiency.‎ With a 𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 𝐒𝐜𝐨𝐫𝐞 and a 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐁𝐚𝐝𝐠𝐞 ‎on Upwork, I pride myself on fast response times and clear ‎communication to ensure client satisfaction.‎ Whether you need a new web application, API development, ‎dashboard system, or bug fixes & optimization, I can help you ‎turn ideas into powerful digital products on time and with clean, ‎maintainable code.‎ 𝐑𝐞𝐜𝐞𝐧𝐭 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬 ✅ Multi-Vendor Rental Marketplace with subscription billing ✅ Customer Portal with Stripe payments and role-based access ✅ Workflow Automation Platform for internal business operations ✅ SaaS Dashboard with reporting and user management 𝐌𝐲 𝐂𝐨𝐫𝐞 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬:‎ 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 • SaaS Platforms & Startup MVPs • Marketplaces & Multi-Vendor Platforms • Customer & Client Portals • Business Management Systems • Internal Operations Software • Workflow Automation Platforms • Subscription-Based Applications 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 ✔️𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝: React, Vue.js, JavaScript, Tailwind CSS, Inertia.js ✔️𝐁𝐚𝐜𝐤𝐞𝐧𝐝: Laravel, API Development, Authentication Systems, Third-Party Integrations ✔️𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 & 𝐈𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞: MySQL, PostgreSQL, Redis, Cloud Deployments ✔️ 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 : Stripe, Paypal Payment Gateways, CRM Systems, Email Services, Business APIs 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗛𝗶𝗿𝗲 𝗠𝗲 ✔ Product-first mindset, not just coding tasks ✔ Strong understanding of SaaS and marketplace business models ✔ Clear communication and project ownership ✔ Scalable architecture built for long-term growth ✔ Reliable support from planning to deployment 𝗜𝗱𝗲𝗮𝗹 𝗣𝗿𝗼𝗷𝗲𝗰𝘁𝘀 • SaaS Products • Startup MVPs • Marketplaces • Client Portals • Business Automation Platforms • Internal Operational Tools If you're building a SaaS platform, marketplace, or business application and need a developer who understands both technology and business goals, send me a message with your project details and I'll share the best approach for moving forward. ⚒️ 𝗦𝗸𝗶𝗹𝗹 𝗦𝘂𝗺𝗺𝗮𝗿𝘆 SaaS Developer | Full Stack Developer | Startup MVP Development | SaaS Development | Multi-Tenant SaaS Development | Marketplace Developer | Marketplace Development | Custom Web Application Development | Custom Software Development | Business Application Development | Product Development | Platform Development | API Development | Workflow Automation | Business Process Automation | CRM Development | Client Portal Development | Customer Portal Development | Dashboard Development | Business Systems Development | Scalable Web Applications 💬 𝐑𝐞𝐚𝐝𝐲 𝐭𝐨 𝐬𝐭𝐚𝐫𝐭? 𝐋𝐞𝐭’𝐬 𝐝𝐢𝐬𝐜𝐮𝐬𝐬 𝐲𝐨𝐮𝐫 𝐩𝐫𝐨𝐣𝐞𝐜𝐭 𝐭𝐨𝐝𝐚𝐲!‎

You need a SaaS product built from scratch or have a SaaS product that needs new features, a platform that needs to scale, or an existing codebase that a previous developer left behind. I help founders and product teams build, extend, and stabilize production applications. One platform I helped build tracks more than 1.3 billion user sessions. Over the last 7+ years, I have worked on enterprise SaaS platforms, billing systems, internal tools, analytics dashboards, and real time applications used by thousands of users. Recent work includes: ➜ SaaS analytics platform with real time dashboards and a React Native SDK tracking more than 1.3 billion user sessions. ➜ B2B SaaS billing platform with Stripe subscriptions, webhooks, PostgreSQL architecture, SendGrid integration, and real time WebSocket dashboards. ➜ Enterprise construction SaaS built with React, NestJS, and PostgreSQL, featuring complex workflows, permissions, and large scale data management. ➜ AI powered desktop platform that converts hand drawn circuits into editable schematics, simulation ready netlists, and live parameter analysis using machine learning and computer vision. I can help with: ➜ Building new SaaS products. ➜ Extending existing applications. ➜ Taking over and stabilizing codebases. ➜ Next.js and React development. ➜ NestJS and Node.js backend systems. ➜ Stripe subscriptions, billing, and payment workflows. ➜ PostgreSQL database design and optimization. ➜ Real time dashboards and WebSocket applications. ➜ AI integrations using OpenAI and Claude. ➜ Third party integrations including Twilio, SendGrid, HubSpot, and external APIs. Core Stack: Next.js, React, TypeScript, Node.js, NestJS, PostgreSQL, Supabase, Prisma, MongoDB, Stripe, OpenAI, Claude, Tailwind CSS, REST APIs, WebSockets, Docker, AWS, and CI/CD. I work directly with founders and product teams. No outsourcing. No handoffs. I write the code, ship the features, and stay accountable for the result. If you need a developer who can take ownership of a SaaS product, extend an existing platform, or help bring a complex application into production, send me the requirements, Figma file, or codebase and I will tell you exactly how I would approach it.

Please read below for a full list of my proficiencies, but for your quick reference as to what I am a master at: * payment gateway solutions (Stripe Certified Developer, PayPal, Authorize.net, Skrill, Braintree, Square, Adyen, cybersource,NMI,2 Checkout, stripe terminal,stripe identity verification, Moneris ,Airwallex,eway, Razorpay, Payu, Paytm, Icici bank, Master CardStripe, cloaking payment gateway expert, etc). * Chat Air.AI with GHL , live trasnfer, call recording , zapier setup with chat air ai, Update GHL lead with Chat Air.AI. * I will solve whatever your payment challenge is or solution that you are looking for. * Generally, I am quite clever with Rest APIs * I have now built several fundraising websites from the ground up that have exceeded my clients expectations. I obviously also maintain them as necessary (which isn’t much if I built them). 
 I'm a Software enthusiast with over 14 years of development experience. I am an expert in Javascript (Node.js, React.js, Vue.js & Angular.js) and all things PHP (Laravel, Magneto, Wordpress, Drupal, Shopify, YII, CAKE) and their complimentary mobile applications (Native Android, IOS, Flutter and React Native to develop applications). I am also experienced with Python, if that is your preference. Along my journey creating web applications, websites, and mobile applications I have contributed to several open-source libraries along the way. I have a strong base in software development with an awesome educational record in my curricula. Over the years, regardless of the technical challenge, I solve the issue with great precision and accuracy. Whether working autonomously or with a team I always exceed best practices, stringently employing version control systems (BitBucket, GIT, Deployment Pipes, Jenkins, etc..), and excel within Linux, AWS, CDNs, S3, Amplify , RDS, etc… I'm addicted to clean workflow using testing frameworks like Karma, Mocha, and Tape. I'm also a part of a team creating a cross-platform desktop application in Electron.js. I have sharp skills in database systems including MySQL, NoSQL databases, and Graph databases like OrientDB and Neo4j. I am Swiftlane api Integrator partner I write impeccable and maintainable code, building a reusable foundation, while also keeping my clients updated about emerging technologies. If the project involves a new technology, I easily and quickly become proficient in the new technologies without any complications, with hundreds of successfully completed projects. 
I look forward to working with you, Arun 

For fundraising website references, please find: 
 Our Fund ugive2 – Simple-Fast-Fundraising Colour Blast – Fundraising Made Easy